2020-06-19 02:49 AM
I want to test ADC-DMA function on STM32H757 i-EVAL Board. But the result is DMA transfer error. I just copy the example code of STM32Cube --- STM32H743I-EVAL\Examples\ADC\ADC_DMA_Transfer to my STM32H757 project.
When execute the code, it occurs only once DMA1_Stream1_IRQHandler.
And the result is DMA transfer error, TEIF1 in DMA_LISR is "1".
My IDE is "System Workbench for STM32"
Can any one help me to solve this problem?
Thanks for your help.
2020-06-19 02:53 AM
The main setting are as bellow:
/* ### - 1 - Initialize ADC peripheral #################################### */
AdcHandle.Instance = ADCx;
if (HAL_ADC_DeInit(&AdcHandle) != HAL_OK)
{
/* ADC de-initialization Error */
Error_Handler();
}
AdcHandle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2; /* Asynchronous clock mode, input ADC clock divided by 2*/
AdcHandle.Init.Resolution = ADC_RESOLUTION_16B; /* 16-bit resolution for converted data */
AdcHandle.Init.ScanConvMode = DISABLE; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
AdcHandle.Init.EOCSelection = ADC_EOC_SINGLE_CONV; /* EOC flag picked-up to indicate conversion end */
AdcHandle.Init.LowPowerAutoWait = DISABLE; /* Auto-delayed conversion feature disabled */
AdcHandle.Init.ContinuousConvMode = ENABLE; /* Continuous mode enabled (automatic conversion restart after each conversion) */
AdcHandle.Init.NbrOfConversion = 1; /* Parameter discarded because sequencer is disabled */
AdcHandle.Init.DiscontinuousConvMode = DISABLE; /* Parameter discarded because sequencer is disabled */
AdcHandle.Init.NbrOfDiscConversion = 1; /* Parameter discarded because sequencer is disabled */
AdcHandle.Init.ExternalTrigConv = ADC_SOFTWARE_START; /* Software start to trig the 1st conversion manually, without external event */
AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; /* Parameter discarded because software trigger chosen */
AdcHandle.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR; /* ADC DMA circular requested */
AdcHandle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; /* DR register is overwritten with the last conversion result in case of overrun */
AdcHandle.Init.OversamplingMode = DISABLE; /* No oversampling */
/* Initialize ADC peripheral according to the passed parameters */
if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
{
Error_Handler();
}
/* ### - 2 - Start calibration ############################################ */
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED) != HAL_OK)
{
Error_Handler();
}
/* ### - 3 - Channel configuration ######################################## */
sConfig.Channel = ADCx_CHANNEL; /* Sampled channel number */
sConfig.Rank = ADC_REGULAR_RANK_1; /* Rank of sampled channel number ADCx_CHANNEL */
sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5; /* Sampling time (number of clock cycles unit) */
sConfig.SingleDiff = ADC_SINGLE_ENDED; /* Single-ended input channel */
sConfig.OffsetNumber = ADC_OFFSET_NONE; /* No offset subtraction */
sConfig.Offset = 0; /* Parameter discarded because offset correction is disabled */
if (HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* ### - 4 - Start conversion in DMA mode ################################# */
if (HAL_ADC_Start_DMA(&AdcHandle,
(uint32_t *)aADCxConvertedData,
ADC_CONVERTED_DATA_BUFFER_SIZE
) != HAL_OK)
{
Error_Handler();
}
2020-06-19 02:54 AM
DMA Setting is :
void HAL_ADC_MspInit(ADC_HandleTypeDef *hadc)
{
GPIO_InitTypeDef GPIO_InitStruct;
static DMA_HandleTypeDef DmaHandle;
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* Enable GPIO clock ****************************************/
__HAL_RCC_GPIOA_CLK_ENABLE();
/* ADC Periph clock enable */
ADCx_CLK_ENABLE();
/* ADC Periph interface clock configuration */
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_CLKP);
/* Enable DMA clock */
DMAx_CHANNELx_CLK_ENABLE();
/*##- 2- Configure peripheral GPIO #########################################*/
/* ADC Channel GPIO pin configuration */
GPIO_InitStruct.Pin = ADCx_CHANNEL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(ADCx_CHANNEL_GPIO_PORT, &GPIO_InitStruct);
/*##- 3- Configure DMA #####################################################*/
/*********************** Configure DMA parameters ***************************/
DmaHandle.Instance = DMA1_Stream1;
DmaHandle.Init.Request = DMA_REQUEST_ADC1;
DmaHandle.Init.Direction = DMA_PERIPH_TO_MEMORY;
DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
DmaHandle.Init.MemInc = DMA_MINC_ENABLE;
DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
DmaHandle.Init.Mode = DMA_CIRCULAR;
DmaHandle.Init.Priority = DMA_PRIORITY_MEDIUM;
/* Deinitialize & Initialize the DMA for new transfer */
HAL_DMA_DeInit(&DmaHandle);
HAL_DMA_Init(&DmaHandle);
/* Associate the DMA handle */
__HAL_LINKDMA(hadc, DMA_Handle, DmaHandle);
/* NVIC configuration for DMA Input data interrupt */
HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream1_IRQn);
}